CN107378370A - It is a kind of to be easy to clamp the pipeline welding equipment docked - Google Patents
It is a kind of to be easy to clamp the pipeline welding equipment docked Download PDFInfo
- Publication number
- CN107378370A CN107378370A CN201710687694.4A CN201710687694A CN107378370A CN 107378370 A CN107378370 A CN 107378370A CN 201710687694 A CN201710687694 A CN 201710687694A CN 107378370 A CN107378370 A CN 107378370A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- bottom plate
- welding
- groove
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0247—Driving means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0538—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor for rotating tubes, e.g. rollers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
It is easy to clamp the pipeline welding equipment docked the invention discloses a kind of, including bottom plate, the lower surface of the bottom plate is fixedly connected with universal wheel, the upper surface of the bottom plate offers the first groove, clutch shaft bearing is fixedly connected with the inwall of first groove, the inner surface of clutch shaft bearing is fixedly connected with threaded rod, the one end of threaded rod away from clutch shaft bearing passes bottom plate and is fixedly connected with the knob on the left of bottom plate, the thread surface of threaded rod is connected with the first movable block, and first movable block be movably connected in the inside of the first groove, the upper surface of first movable block is fixedly connected with the first fixed plate, the back side of first fixed plate is fixed and is inlaid with second bearing.The present invention is by setting the first disk, the second disk and hydraulically extensible bar, solve current pipeline and use manual welding in welding, the problem of welding personnel is difficult control speed of welding, and easily causes the dislocation of pipeline in welding, and welding personnel labor intensity is big and welding efficiency is low.
Description
Technical field
It is specially a kind of to be easy to clamp the pipeline welding equipment docked the present invention relates to technical field of welding equipment.
Background technology
Pipeline be with pipe, pipe connector and valve etc. be connected into be used for convey gas, liquid or with solid particle
Fluid device, usual fluid through air blower, compressor, pump and boiler etc. supercharging after, flow to low pressure at the high pressure of pipeline
Place, can also be used fluid itself pressure or gravity conveying, having many uses for pipeline is general, be used primarily in feedwater, draining, heat supply,
Give gas, in long distance delivery oil, natural gas, agricultural irrigation, hydraulic engineering and various commercial plants.
The connection of two pipelines is typically attached using joint, but for two larger pipelines of external diameter typically using weldering
Connect in succession, the welding for the larger pipeline of external diameter at present exists such as typically by manually welding by manual welding
Lower problem：Welding personnel is difficult control speed of welding, and easily causes the dislocation of pipeline in welding, has had a strong impact on welding matter
Amount, adds task of doing over again, while manual welding also has the shortcomings that welding personnel labor intensity is big, and welding efficiency is low.
The content of the invention
(1) technical problem solved
In view of the shortcomings of the prior art, it is easy to clamp the pipeline welding equipment docked the invention provides a kind of, solves
Current pipeline uses manual welding in welding, and welding personnel is difficult control speed of welding, and easily causes pipe in welding
The dislocation in road, the problem of welding personnel labor intensity is big and welding efficiency is low.
(2) technical scheme
To achieve the above object, the present invention provides following technical scheme：It is a kind of to be easy to clamp the pipeline welding equipment docked,
Including bottom plate, the lower surface of the bottom plate is fixedly connected with universal wheel, and the upper surface of the bottom plate offers the first groove, described
Clutch shaft bearing is fixedly connected with the inwall of first groove, the inner surface of the clutch shaft bearing is fixedly connected with threaded rod, described
The one end of threaded rod away from clutch shaft bearing passes bottom plate and is fixedly connected with the knob on the left of bottom plate, the surface spiral shell of the threaded rod
Line is connected with the first movable block, and the first movable block is movably connected in the inside of the first groove, the upper table of first movable block
Face is fixedly connected with the first fixed plate, and the back side of first fixed plate, which is fixed, is inlaid with second bearing, the second bearing
Inner surface is fixedly connected with the first bull stick, and the surface fixed cover of first bull stick is connected to the first disk.
The upper surface of the bottom plate is fixedly connected with support frame, and the quantity of support frame as described above is four, and two support frames
Opposite face be fixedly connected with top plate, the lower surface of the top plate is fixedly connected with electric pushrod, the bottom of the electric pushrod
Electric welding machine is fixedly connected with, the lower surface of the top plate offers the second groove, is fixedly connected on the inwall of second groove
There is fix bar, the surface activity of the fix bar is socketed with the second movable block, and the second movable block is movably connected in the second groove
Inside, the lower surface of second movable block is fixedly connected with hydraulically extensible bar, and the quantity of the hydraulically extensible bar is two,
And the bottom of two hydraulically extensible bars has been respectively fixedly connected with the first contiguous block and the second contiguous block.
The one side of first contiguous block offers blind hole, and the second contiguous block is movably connected in the inside of blind hole, institute
The front and back for stating the first contiguous block offers jack, and jack is connected with blind hole, the front of second contiguous block
Through hole is offered, the inside of the jack and through hole is connected with latch, first contiguous block and the second contiguous block
Lower surface has been fixedly connected with the second fixed plate, and the back side of second fixed plate, which is fixed, is inlaid with 3rd bearing, and the described 3rd
The inner surface of bearing is fixedly connected with the second bull stick, and the surface fixed cover of second bull stick is connected to the second disk.
Preferably, the upper surface of the bottom plate is fixedly connected with fixed block, and the upper surface of the fixed block offers semicircle
Groove, and support frame is between two fixed blocks.
Preferably, the quantity of the through hole is four, and the equidistant front for being opened in the second movable block of four through holes.
Preferably, the size of first movable block is adapted with the size of the first groove, second movable block it is big
The small size with the second groove is adapted.
Preferably, the quantity of the universal wheel is four, and four universal wheels are located at the corner of bottom plate lower surface respectively.
Preferably, the electric welding machine is between two support frames.
Preferably, second disk is located at the surface of the first disk.
(3) beneficial effect
It is easy to clamp the pipeline welding equipment docked the invention provides a kind of, possesses following beneficial effect：
(1), the present invention is by setting the first disk, the second disk and hydraulically extensible bar, will when being welded to pipeline
Pipeline is placed on the first disk, the elongation of hydraulically extensible bar, drives the second disk to move downward, two the first disks and two second
Disk collective effect is clamped to pipeline, and electric pushrod work drives electric welding machine to move downward, and pipeline is welded, and solves
Current pipeline use manual welding in welding, and welding personnel is difficult control speed of welding, and is easily caused when welding
The dislocation of pipeline, the problem of welding personnel labor intensity is big and welding efficiency is low.
(2), the present invention is by setting second bearing and 3rd bearing, in welding, due to second bearing and 3rd bearing
Presence so that the first disk and the second disk can rotate, electric pushrod work drive electric welding machine move downward, to pipeline
Welded, pipeline can rotate, and electric welding machine carries out girth welding to pipeline.
(3), the present invention passes through turn knob band by being threaded bar, the first movable block, fix bar and the second movable block
Dynamic threaded rod rotation, so as to adjust the distance between two first disks, the second movable block can also slide in fix bar, make
Obtain the distance between two second disks to be adjusted, be easy to the pipeline different to caliber to weld.
(4), the present invention is by setting the first contiguous block and the second contiguous block, between two the second disks of regulation are needed
Apart from when, extract latch, the second contiguous block be pushed into blind hole, then latch is inserted in jack and through hole, you can complete two
The distance between second disk is adjusted.
(5), pipeline is prevented in half slot by setting fixed block and half slot, prevents the welding ends of pipeline by the present invention
Tilt, welding precision is impacted.
Brief description of the drawings
Fig. 1 is front elevational view of the present invention；
Fig. 2 is side view of the present invention；
Fig. 3 is the sectional side view of the first fixed plate of the invention；
Fig. 4 is the sectional side view of the second fixed plate of the invention；
Fig. 5 is the sectional side view of latch of the present invention.
In figure：1 bottom plate, 2 universal wheels, 3 first grooves, 4 clutch shaft bearings, 5 threaded rods, 6 knobs, 7 first movable blocks, 8
One fixed plate, 9 second bearings, 10 first bull sticks, 11 first disks, 12 support frames, 13 top plates, 14 electric pushrods, 15 electric welding machines,
It is 16 second grooves, 17 fix bars, 18 second movable blocks, 19 hydraulically extensible bars, 20 first contiguous blocks, 21 second contiguous blocks, 22 blind
Hole, 23 jacks, 24 through holes, 25 latches, 26 second fixed plates, 27 3rd bearings, 28 second bull sticks, 29 second disks, 30 are fixed
Block, 31 half slots.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As Figure 1-5, the present invention provides a kind of technical scheme：It is a kind of to be easy to clamp the pipeline welding equipment docked, bag
Bottom plate (1) is included, the lower surface of bottom plate (1) is fixedly connected with universal wheel (2), and the quantity of universal wheel (2) is four, and four universal
The corner that (2) are located at bottom plate (1) lower surface respectively is taken turns, the upper surface of bottom plate (1) offers the first groove (3), the first groove (3)
Inwall on be fixedly connected with clutch shaft bearing (4), the inner surface of clutch shaft bearing (4) is fixedly connected with threaded rod (5), threaded rod
(5) one end away from clutch shaft bearing (4) passes bottom plate (1) and is fixedly connected with the knob (6) on the left of bottom plate (1), threaded rod (5)
Thread surface be connected with the first movable block (7), and the first movable block (7) is movably connected in the inside of the first groove (3), first
The upper surface of movable block (7) is fixedly connected with the first fixed plate (8), and the back side of the first fixed plate (8), which is fixed, is inlaid with the second axle
Hold (9), the inner surface of second bearing (9) is fixedly connected with the first bull stick (10), and the surface fixed cover of the first bull stick (10) is connected to
First disk (11).
The upper surface of bottom plate (1) is fixedly connected with support frame (12), and the quantity of support frame (12) is four, and two supports
The opposite face of frame (12) is fixedly connected with top plate (13), and the lower surface of top plate (13) is fixedly connected with electric pushrod (14), electronic
The bottom of push rod (14) is fixedly connected with electric welding machine (15), and electric welding machine (15) is between two support frames (12), top plate (13)
Lower surface offer the second groove (16), fix bar (17), fix bar are fixedly connected with the inwall of the second groove (16)
(17) surface activity is socketed with the second movable block (18), and the second movable block (18) is movably connected in the interior of the second groove (16)
Portion, the size of the first movable block (7) are adapted with the size of the first groove (3), the size of the second movable block (18) and second recessed
The size of groove (16) is adapted, and the lower surface of the second movable block (18) is fixedly connected with hydraulically extensible bar (19), hydraulically extensible bar
(19) quantity is two, and the bottom of two hydraulically extensible bars (19) has been respectively fixedly connected with the first contiguous block (20) and second
Contiguous block (21).
The one side of first contiguous block (20) offers blind hole (22), and the second contiguous block (21) is movably connected in blind hole
(22) inside, the front and back of the first contiguous block (20) offer jack (23), and jack (23) and blind hole (22) phase
Connection, the front of the second contiguous block (21) offer through hole (24), and the inside of jack (23) and through hole (24) is connected with
Latch (25), the quantity of through hole (24) is four, and four equidistant fronts for being opened in the second movable block (18) of through hole (24),
By setting the first contiguous block (20) and the second contiguous block (21), the distance between two second disks (29) of regulation are being needed
When, latch (25) is extracted, the second contiguous block (21) is pushed into blind hole (22), then latch (25) is inserted into jack (23) and through hole
(24) in, you can complete the regulation of the distance between two second disks (29), the first contiguous block (20) and the second contiguous block (21)
Lower surface be fixedly connected with the second fixed plate (26), the back side of the second fixed plate (26), which is fixed, is inlaid with 3rd bearing
(27), by setting second bearing (9) and 3rd bearing (27), in welding, due to second bearing (9) and 3rd bearing (27)
Presence so that the first disk (11) and the second disk (29) can rotate, electric pushrod (14) work drive electric welding machine
(15) move downward, pipeline is welded, pipeline can rotate, and electric welding machine (15) carries out girth welding, the 3rd axle to pipeline
The inner surface for holding (27) is fixedly connected with the second bull stick (28), and the surface fixed cover of the second bull stick (28) is connected to the second disk
(29), the second disk (29) is located at the surface of the first disk (11), and the upper surface of bottom plate (1) is fixedly connected with fixed block
(30), the upper surface of fixed block (30) offers half slot (31), and support frame (12) leads between two fixed blocks (30)
Setting fixed block (30) and half slot (31) are crossed, pipeline is prevented in half slot (31), prevents the welding ends of pipeline from tilting, butt welding
Connect precision to impact, by being threaded bar (5), the first movable block (7), fix bar (17) and the second movable block (18), lead to
Cross turn knob (6) and drive threaded rod (5) rotation, so as to adjust the distance between two first disks (11), the second movable block
(18) can also be slided in fix bar (17) so that the distance between two second disks (29) are adjusted, and are easy to pipe
The different pipeline in footpath is welded.
When being welded to pipeline, pipeline is placed on the first disk (11), hydraulically extensible bar (19) elongation, drives the
Two disks (29) are moved downward, and two the first disks (11) and two the second disk (29) collective effects are clamped to pipeline,
Electric pushrod (14) work drives electric welding machine (15) to move downward, and pipeline is welded.
It can to sum up obtain, the present invention solves by setting the first disk (11), the second disk (29) and hydraulically extensible bar (19)
Current pipeline use manual welding in welding, and welding personnel is difficult control speed of welding, and is easily caused when welding
The dislocation of pipeline, the problem of welding personnel labor intensity is big and welding efficiency is low.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of be easy to clamp the pipeline welding equipment docked, including bottom plate (1), the lower surface of the bottom plate (1) are fixedly connected
There is universal wheel (2), it is characterised in that：The upper surface of the bottom plate (1) offers the first groove (3), first groove (3)
Clutch shaft bearing (4) is fixedly connected with inwall, the inner surface of the clutch shaft bearing (4) is fixedly connected with threaded rod (5), the spiral shell
The one end of rasp bar (5) away from clutch shaft bearing (4) passes bottom plate (1) and is fixedly connected with the knob (6) on the left of bottom plate (1), described
The thread surface of threaded rod (5) is connected with the first movable block (7), and the first movable block (7) is movably connected in the first groove (3)
Inside, the upper surface of first movable block (7) are fixedly connected with the first fixed plate (8), the back side of first fixed plate (8)
Fixed to be inlaid with second bearing (9), the inner surface of the second bearing (9) is fixedly connected with the first bull stick (10), and described first
The surface fixed cover of bull stick (10) is connected to the first disk (11)；
The upper surface of the bottom plate (1) is fixedly connected with support frame (12), and the quantity of support frame as described above (12) is four, and two
The opposite face of support frame (12) is fixedly connected with top plate (13), and the lower surface of the top plate (13) is fixedly connected with electric pushrod
(14), the bottom of the electric pushrod (14) is fixedly connected with electric welding machine (15), and the lower surface of the top plate (13) offers
Two grooves (16), fix bar (17), the surface of the fix bar (17) are fixedly connected with the inwall of second groove (16)
Movable sleeve is connected to the second movable block (18), and the second movable block (18) is movably connected in the inside of the second groove (16), and described
The lower surface of two movable blocks (18) is fixedly connected with hydraulically extensible bar (19), and the quantity of the hydraulically extensible bar (19) is two,
And the bottom of two hydraulically extensible bars (19) has been respectively fixedly connected with the first contiguous block (20) and the second contiguous block (21)；
The one side of first contiguous block (20) offers blind hole (22), and the second contiguous block (21) is movably connected in blind hole
(22) inside, the front and back of first contiguous block (20) offer jack (23), and jack (23) and blind hole
(22) be connected, the front of second contiguous block (21) offers through hole (24), the jack (23) and through hole (24) it is interior
Portion is connected with latch (25), and the lower surface of first contiguous block (20) and the second contiguous block (21) has been fixedly connected with
Second fixed plate (26), the back side of second fixed plate (26), which is fixed, is inlaid with 3rd bearing (27), the 3rd bearing
(27) inner surface is fixedly connected with the second bull stick (28), and the surface fixed cover of second bull stick (28) is connected to the second disk
(29)。
A kind of 2. pipeline welding equipment for being easy to clamp docking according to claim 1, it is characterised in that：The bottom plate
(1) upper surface is fixedly connected with fixed block (30), and the upper surface of the fixed block (30) offers half slot (31), and supports
Frame (12) is between two fixed blocks (30).
A kind of 3. pipeline welding equipment for being easy to clamp docking according to claim 1, it is characterised in that：The through hole
(24) quantity is four, and four equidistant fronts for being opened in the second movable block (18) of through hole (24).
A kind of 4. pipeline welding equipment for being easy to clamp docking according to claim 1, it is characterised in that：Described first lives
The size of motion block (7) is adapted with the size of the first groove (3), size and the second groove (16) of second movable block (18)
Size be adapted.
A kind of 5. pipeline welding equipment for being easy to clamp docking according to claim 1, it is characterised in that：The universal wheel
(2) quantity is four, and four universal wheels (2) are located at the corner of bottom plate (1) lower surface respectively.
A kind of 6. pipeline welding equipment for being easy to clamp docking according to claim 1, it is characterised in that：The electric welding machine
(15) between two support frames (12).
A kind of 7. pipeline welding equipment for being easy to clamp docking according to claim 1, it is characterised in that：Second circle
Disk (29) is located at the surface of the first disk (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687694.4A CN107378370A (en) | 2017-08-11 | 2017-08-11 | It is a kind of to be easy to clamp the pipeline welding equipment docked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687694.4A CN107378370A (en) | 2017-08-11 | 2017-08-11 | It is a kind of to be easy to clamp the pipeline welding equipment docked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107378370A true CN107378370A (en) | 2017-11-24 |
Family
ID=60355452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710687694.4A Withdrawn CN107378370A (en) | 2017-08-11 | 2017-08-11 | It is a kind of to be easy to clamp the pipeline welding equipment docked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107378370A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091526A (en) * | 2020-09-21 | 2020-12-18 | 毛秀花 | Machine part welding butt joint positioner |
-
2017
- 2017-08-11 CN CN201710687694.4A patent/CN107378370A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091526A (en) * | 2020-09-21 | 2020-12-18 | 毛秀花 | Machine part welding butt joint positioner |
| CN112091526B (en) * | 2020-09-21 | 2022-09-09 | 惠州市冠尧五金制品有限公司 | Machine part welding butt joint positioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206883749U (en) | A kind of fixed-length cut-off equipment for large-diameter pipeline | |
| CN106624119B (en) | A kind of cutting equipment for major diameter dimension pipeline | |
| CN107252973A (en) | One kind is for pipeline periphery transverse weld laser welding apparatus | |
| CN107378371A (en) | It is a kind of to be easy to clamp the accurate method for welding pipeline docked | |
| CN206474735U (en) | A kind of cutting equipment for major diameter dimension pipeline | |
| CN207420449U (en) | A kind of road drilling machine | |
| CN108590620A (en) | Supercritical CO2Sand mo(u)ld draft experiment apparatus and system is taken in seam | |
| CN107186790A (en) | A kind of fixed-length cut-off equipment for large-diameter pipeline | |
| CN107900724A (en) | A kind of pipe cutting equipment with support function | |
| CN111375974A (en) | Positioning device convenient for pipeline welding | |
| CN107775606A (en) | A kind of valve processing workbench of adjustable height and fixing function | |
| CN207205709U (en) | It is a kind of to be easy to clamp the pipeline welding equipment docked | |
| CN107378370A (en) | It is a kind of to be easy to clamp the pipeline welding equipment docked | |
| CN206262940U (en) | A kind of oil field pipe cleaning device | |
| CN207508594U (en) | A kind of pipeline welding equipment convenient for clamping docking | |
| CN109014288A (en) | Perforating device is used in a kind of processing of automobile metal accessory | |
| CN210046247U (en) | Positioning device convenient for pipeline welding | |
| CN208854590U (en) | A kind of pipeline processing fixed frame | |
| CN207841197U (en) | A kind of superposing type hydraulic valve bank installation tool | |
| CN210705044U (en) | Pipeline cutting equipment capable of accurately cutting | |
| CN105129421B (en) | One kind puts washer arrangement automatically | |
| CN209182078U (en) | Filter-press formula farmland soil solution collection system | |
| CN108789541A (en) | A kind of pipe cutting machine | |
| CN207656813U (en) | Pipe cutting equipment | |
| CN209611833U (en) | A kind of postoperative effusion drainage device of Medical post-breast |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171124 |
|
| WW01 | Invention patent application withdrawn after publication |